*{
    margin: 0px;
    padding: 0px;
}
#top{
    background-color: rgb(30, 103, 116);
    height: 10vh;
}
li{
    list-style: none;
    float: left;
    width: 20vw;
    text-align: center;
    height: 10vh;
    line-height: 10vh;
}
a{
    text-decoration: none;
}
li>a{
    color: white;
}
li>a:hover{
    color: yellow;
}
#seaFrom{
    text-align: center;
    height: 15vh;
    line-height: 15vh;
}
#seaf{
    display: inline-block;
    border: 1px solid black;
    margin-top: 3vh;
    width: 28vw;
    height: 8vh;
    line-height: 8vh;
    background-color: aquamarine;
    border-radius: 15px;
}
#seatxt{
    width: 60%;
    height: 60%;
    border-radius: 15px;
}
#seasub{
    width: 20%;
    height: 60%;
    background-color: transparent;
    border: none;
}
#seasub:hover{
    cursor: pointer;
}
#center{
    width: 75vw;
    margin: auto;
}
#iteams{
    float: left;
    width: 75vw;
}
.wh{
    float: left;
    width: 6vw;
    height: 1px;
}
.iteam{
    border: 1px solid black;
    width: 10vw;
    height: 25vh;
    background-image: url(https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fpic1.win4000.com%2Fwallpaper%2F2018-03-02%2F5a991dc0e89f3.jpg&refer=http%3A%2F%2Fpic1.win4000.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1671151773&t=f9912eb69dba24c7b7d6af70dfc1089e);
    background-size: 100%;
    position: relative;
    float: left;
    margin-bottom: 10vh;
    border-radius: 8%;
    box-shadow: 2px 2px 5px gray;
}
.iteam:hover{
    box-shadow: 2px 2px 5px #000;    
}
.iteam:hover>.i_title{
    color: yellow;
}
.i_title{
    position: absolute;
    top: 3%;
    left: 3%;
    color: black;
}
.i_txt{
    position: absolute;
    right:3%;
    bottom: 3%;
    font-size: 12px;
    color: aquamarine;
}